Cord lock mounting for venetian blinds



Jan. 17, 1950 F. J. BURNS 2,494,858

CORD LOCK MOUNTING FOR VENETIAN BLINDS Filed Aug. 5, 1946 5 t i 2 i I NVEN TOR.

fled Bunna.

ATTORNEY Patented Jan. 17, 1950 UNITED sures PATENT CQRD LOCK MOUNTINGFOR VENETIAN BLINDS ed .Burns, a inaw, ch as n to h Columbia Mills,Inc., New York, N. 1'.

Application August 5, 1946,Serial No. 688,569

4 Claim 1 This invention relates to a cord lock mounting for Venetianblinds and the like.

One of the salient objects of the invention is to design a cord lockunit which can be easily and quickly mounted in the head box of aVenetian blind without the use of bolts, screws or other similarsecuring means.

Another object is to provide a cord lock unit formed of stampings, thatcan be mounted in a head box by unskilled labor without the use of toolsother than a conventional plier.

A further object is to provide a cord lock and mounting in which themeans for mounting and securing is formed integral with the cord lockunit and the head box so that there are no loose parts to be packaged,assembled and secured.

Still a further object is to provide a method of securing a cord lockunit in a head box in such manner that it will be firmly fixed inposition and which can be mounted in a minimum length of time.

A further object still is to provide a cord lock unit which can bemanufactured either a right or left hand so that it readily fits anytype of installation, and which also serves to reinforce the headboxstructure when in position.

To the accomplishment of the foregoing and related ends, said inventionthen consists of the means hereinafter fully described and particularlypointed out in the claims, the annexed drawing, the followingdescription setting forth in detail certain means and one mode ofcarrying out the invention, such disclosed means and mode illustrating,however, but one of various ways in which the principle of the inventionmay be used.

In the drawing:

Fig. 1 is a fragmentary, perspective, part-sectional view of one end ofa Venetian blind head box showing the cord lock unit secured in positiontherein, parts being broken away to more clearly show the combination.

Fig. 2 is a sectional, end view of the assembly shown in Fig. 1.

Fig. 3 is a view similar to Fig. 2, showing the manner of mounting thecord lock unit.

Referring now more particularly to the drawing in which I have shown thepreferred embodiment of my invention, the letter B indicates generallythe head box of a Venetian blind; this is preferably formed of metal andcomprises bottom and side walls 8, 9 and respectively, and inwardlyturned flanges H are provided on the upper ends of the side walls andfor a purpose to be presently described.

A transversely disposed plate bracket l2 spans the head box, saidbracket forming a bearing and support for the tilt shaft (not shown),and angularly disposed wings l3 are formed integral with the bracket andcan be welded or otherwise secured to the side walls of the head box inany desired manner, the lower corners of the bracket I 2 being cut asshown, to form a triangular shaped opening I4 when the bracket isassembled in position.

The cord lock unit is broadly indicated at C. the one side wall l5extending beyond the other, the extending section bein angled and offsetas at It, the upper edge terminating in a vertical section ll as shown.

The section ii! of the bottom wall of the unit projects beyond the mainbody and notches l5 are provided in the edges of said projecting sectionto engage and interlock with the bracket plate 12 when the unit isassembled.

When it is desired to mount the cord lock unit in the head box, thworkman takes the assembled unit, tilts it to position as indicated inFig. 3 of the drawing so that the projecting end I8 of the bottom wallof the unit projects into the opening l4, the unit is then tilted asindicated by the arrow in Fig. 3 so that the notch [9 engages the wallof the opening M with the opposite edge of the unit wedged against theside Wall of the head box and the wall section ll resting in facialcontact with the side Wall H). A tab 20 is provided on the overhangingflange ll of the head box, and this tab is then bent down and over theWall section 11, thus securing the unit firmly in position, the flange lI having been previously cut to form the tab.

To remove the unit it is merely necessary to bend the tab 28 upwardly toposition as indicated in solid lines in Fig. 3 of the drawing, and theunit can then be easily removed.

When it is desired to provide for a left hand mounting, the projectingwall [6 is provided on the opposite side of the unit and theinstallation is made in exactly the same manner.

From the foregoing description, it will be clearly obvious that I haveperfected a simple, practical, and inexpensive method and arrangementfor mounting cord locks in Venetian blinds.

What I claim is:

l. The combination with a Venetian blind head box havin a transverselydisposed bracket therein, of a U-shaped cord lock unit associatedtherewith and formed with upwardly projecting side walls and alongitudinally projecting bottom wall section projecting through saidbracket in releasable interlocking engagement therewith,

3 and means for releasably securing one side wall of said unit to theupper edge of said head box.

2. The combination defined in claim 1 in which the lower corners of thebracket are cut away to form, when assembled in a head box, an Openingbetween th bracket and headbox of a size to receive said projectingbottom wall section, and a notch in the edge of the section forinterlocking engagement with the bracket to lock it in position when theunit is turned to predetermined position in the headbox.

3. The combination with the headbox of a Venetian blind having atransversely disposed bracket secured therein, of a U-shaped cord lockunit associated therewith, one side wall project ing above the other andterminating in an offset vertical section adapted to lie in facialcontact with and bear against the side wall of the headbox, and areadily bendable tab provided on the upper edge of the headbox andbendable to po- 4 sition to engage said offset vertical section, andsecure the cord lock unit in position.

4. The structure as defined in claim 3 in which the cord lock unit isformed with a horizontally disposed projecting bottom section extendingthrough an opening in said bracket, and means on said section andmovable into interlocking engagement with the edge of the bracketopening when the unit is turned to operative, assembled position.

FRED J. BURNS.

REFERENCES CITED UNITED STATES PATENTS Name Date Burns Dec. 3, 1940Number

